package com.itheima.reggie.service.impl;

import com.baomidou.mybatisplus.core.conditions.query.LambdaQueryWrapper;
import com.baomidou.mybatisplus.core.mapper.BaseMapper;
import com.baomidou.mybatisplus.core.toolkit.IdWorker;
import com.baomidou.mybatisplus.extension.service.impl.ServiceImpl;
import com.itheima.reggie.common.BaseContext;
import com.itheima.reggie.common.CustomException;
import com.itheima.reggie.dao.OrdersMapper;
import com.itheima.reggie.pojo.*;
import com.itheima.reggie.service.*;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;

import java.math.BigDecimal;
import java.time.LocalDateTime;
import java.util.List;
import java.util.concurrent.atomic.AtomicInteger;
import java.util.stream.Collectors;


@Service
public class OrderserviceImpl extends ServiceImpl<OrdersMapper, Orders> implements Orderservice {

    @Autowired
    private ShoppingCartService shoppingCartService;

    @Autowired
    private UserService userService;

    @Autowired
    private AddressBookService addressBookService;

    @Autowired
    private OrderDetailService orderDetailService;


    @Override
    public void submit(Orders orders) {
        //获取用户id
        Long currentId = BaseContext.getCurrentId();
        //查询用户购物车数据
        LambdaQueryWrapper<ShoppingCart> queryWrapper = new LambdaQueryWrapper<>();
        queryWrapper.eq(ShoppingCart::getUserId, currentId);

        List<ShoppingCart> list = shoppingCartService.list(queryWrapper);

        if (list == null || list.size() == 0) {
            throw new CustomException("购物车异常，不能下单");
        }
        //查询用户数据
        User userServiceById = userService.getById(currentId);

        //查询地址数据
        Long addressBookId = orders.getAddressBookId();
        AddressBook addressBook = addressBookService.getById(addressBookId);
        if (addressBook == null) {
            throw new CustomException("请先添加地址");
        }

        long Orderid = IdWorker.getId();

        AtomicInteger atomicInteger = new AtomicInteger(0);

        //组装订单信息
        List<OrderDetail> details = list.stream().map((item) -> {
            OrderDetail orderDetail = new OrderDetail();
            orderDetail.setOrderId(Orderid);
            orderDetail.setNumber(item.getNumber());
            orderDetail.setDishFlavor(item.getDishFlavor());
            orderDetail.setDishId(item.getDishId());
            orderDetail.setSetmealId(item.getSetmealId());
            orderDetail.setName(item.getName());
            orderDetail.setImage(item.getImage());
            orderDetail.setAmount(item.getAmount());
            atomicInteger.addAndGet(item.getAmount().multiply(new BigDecimal(item.getNumber())).intValue());
            return orderDetail;
        }).collect(Collectors.toList());

        orders.setId(Orderid);
        orders.setOrderTime(LocalDateTime.now());
        orders.setCheckoutTime(LocalDateTime.now());
        orders.setStatus(2);
        orders.setAmount(new BigDecimal(atomicInteger.get()));
        orders.setUserId(currentId);
        orders.setNumber(String.valueOf(Orderid));
        orders.setUserName(userServiceById.getName());
        orders.setConsignee(addressBook.getPhone());
        orders.setAddress((addressBook.getProvinceName() == null ? "" : addressBook.getProvinceName())
                + (addressBook.getCityName() == null ? "" : addressBook.getCityName())
                + (addressBook.getDistrictCode() == null ? "" : addressBook.getDistrictCode())
                + (addressBook.getDetail() == null ? "" : addressBook.getDetail()));

        //向订单表插入数据，一条数据
        this.save(orders);

        //向订单明细表插入数据，多条数据
        orderDetailService.saveBatch(details);

        //清空购物车数据
        shoppingCartService.remove(queryWrapper);

    }

}
